Shelf bracket



FIG. 1 is a left side elevation view which is also the mirror image of a right side elevation view of my design;

FIG. 2 is a top plan view of my design;

FIG. 3 is a bottom plan view of my design;

FIG. 4 is a back elevation view of my design; and,

FIG. 5 is a front elevation view of my design. 

The ornamental design for a shelf bracket, as shown and described. 